Black screen when I login in Ubuntu 13.10

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http://ubuntuforums.org – Hi! Summary: When I login to my user account, neither Unity nor Gnome load and I get a black screen. When I got my laptop, I installed Ubuntu alongside Windows 7 (must've been 11.04 at the time). Unfortunately, Ubuntu was never able to tame my Nvidia graphics card. I think I remember I had to reset the driver settings but it completely broke everything, Windows included. Everytime I tried. I spent days reinstalling everything over and over again without success. So, I stopped using Linux. I left it on my hard drive probably because I didn't want to install everything all over again. (Hardware)